1921] MILES—LEAF SPOTS OF ELM 189 
5761; Fl. Gall. et Germ. Exsic. no. 1000; SCHLEICHER Crypt. Exsic. 
no. 73; Hott, Scumipt, und Kunze Deut. Schwamme no. 32; DEs- 
MAZIERES Crypt. Fr., Ser. I, no. 284; MoncIER et NESTLER Stirpes 
Crypt. no. 766; von Tuttmen Fung. Austr. no. 499; voN THUMEN 
Myc. Univ. no. 2064; Fucket Fung. Rhen. nos. 1013 and 2265; 
Sypow Myc. Mart. no. 256; Lunpw. Fung. Hung. no. 374; 
RABENHORST Herb. Myc. no. 658; WESTEND. Herb. Crypt. no. 111; 
KRUEGER Fung. Sax. no. 1514; ERIKSSON F. Scand. nos. 292a and 
292b. 
The synonymy of the fungus is as follows: Systremma Ulmi 
(Schleich.) Thiess. and Syd., Die Dothidiales, Ann. Myc. 13:334. 
1915; Sphaeria Ulmi Schleich., Crypt. Exsic. no. 73, sec. de Can- 
dolle Fl. Franc. 2:288. 1805; Sphaeria xylomoides DC., Fl. Franc. 
2:288. 1805; Sphaeria Ulmi Duv., Hoppe’s Bot. Taschenb., 105. 
1809; Xyloma sticticum Mart., Crypt. Flor Erlang., 309. 1817; 
Sphaeria ulmaria Sow., Eng. Fung., pl. 374. fig. 3; Polystigma 
Ulmi Link, Rab. Handb. 1:167; Dothidea Ulmi Fr., Syst. 2:555. 
_ 1823; Phyllachora Ulmi Fuck., Symb. 218; Sacc. Syll. Fung. 
2:594. 1883; Euryachora Ulmi Schroeter, Crypt. Fl. Schles. 37:473. 
The conidial stage of this fungus is Piggotia asiroidea B. and Br. 
Other leaf spots of elm 
IN AMERICA 
MYcosPHAERELLA Utmi Kleb. (28).—This is the ascigerous 
stage of Phleospora Ulmi (Fr.) Wallr., which has been reported 
both in America and Europe as the cause of a leaf spot on Ul/mus 
campestris, U. glabra, and U. americana. In the conidial stage it 
is said sometimes to do considerable damage to nursery stock and 
young trees. STewarT (36) states that it has been observed 
several times to cause extensive defoliation of young elms in New 
York. Numerous, small, reddish-brown spots appear on the upper 
side of the leaves, which in consequence gradually turn yellow, 
the margin becomes brown and rolls up, and they fall early in the 
season. The spores ooze out in minute cirrhi which dry on the 
lower side of the leaf surface and form small whitish patches. 
SACCARDO (31) states that on account of the absence of pycnidia 
it leans toward Septogloeum, and it is sometimes known by that 
